<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-alert title="添加商品信息" type="info" show-icon> </el-alert>
      </el-row>
      <el-row class="step">
        <el-steps :active="activeIndex - 0" align-center>
          <el-step title="基本信息"></el-step>
          <el-step title="商品参数"></el-step>
          <el-step title="商品属性"></el-step>
          <el-step title="商品图片"></el-step>
          <el-step title="商品内容"></el-step>
          <el-step title="完成"></el-step>
        </el-steps>
      </el-row>

      <el-form
        :model="addForm"
        :rules="rules"
        ref="ruleForm"
        label-width="100px"
        class="demo-ruleForm"
        label-position="top"
      >
        <el-tabs
          tab-position="left"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price" type="number">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight" type="number">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number" type="number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                expand-trigger="hover"
                :options="cascData"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane name="1" label="商品参数">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
              el-form-item
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="header"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce" />
            <!-- 添加按钮 -->
            <el-button type="primary" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 预览图片对话框 -->
    <el-dialog title="预览图片" :visible.sync="dialog" width="50%">
      <img :src="prepicture" alt="" />
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeIndex: "0",
      //   添加请求表单
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        // 富文本编辑器内容
        goods_introduce: "",
        attrs: [],
      },
      //   验证规则对象
      rules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      //   级联选择器数据
      cascData: [],
      // 商品分类列表
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      // 标签
      manyTableData: [],
      //   静态属性
      onlyTableData: [],
      // 上传图片添加请求头保存 token信息
      header: { Authorization: window.sessionStorage.getItem("token") },
      // 控制预览图片对话框
      dialog: false,
      // 图片地址
      prepicture: "",
    };
  },
  methods: {
    //   获取级联选择器数据
    async getCascDate() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status != 200) {
        return this.$message.error(res.meta.msg);
      }

      this.cascData = res.data;
      console.log(this.cascData);
    },
    // 级联选择器切换
    handleChange() {
      if (this.addForm.goods_cat.length != 3) {
        this.addForm.goods_cat = [];
      }
    },

    beforeTabLeave(activeName, oldActiveName) {
      if (this.addForm.goods_cat.length != 3) {
        this.$message.error("请填写基本信息");
        return false;
      }
    },

    // 获取动态参数
    async getListData() {
      const { data: res } = await this.$http.get(
        `categories/${this.ID}/attributes`,
        {
          params: { sel: "many" },
        }
      );
      if (res.meta.status != 200) {
        return this.$message.error(res.meta.msg);
      }
      res.data.forEach((item) => {
        item.attr_vals =
          item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
      });
      this.manyTableData = res.data;
      console.log(this.manyTableData);
    },
    // 获取静态属性
    async getOnlyData() {
      const { data: res } = await this.$http.get(
        `categories/${this.ID}/attributes`,
        {
          params: { sel: "only" },
        }
      );
      if (res.meta.status != 200) {
        return this.$message.error(res.meta.msg);
      }
      this.onlyTableData = res.data;
      console.log(this.onlyTableData);
    },

    handleClose() {
      console.log(111);
    },
    // 预览事件
    handlePreview(file) {
      this.prepicture = file.response.data.url;
      this.dialog = true;
    },
    // 移除事件
    handleRemove(file) {
      // console.log(file);
      // 1.获取将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path;
      // 2.从pics数组中，找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath);
      // 3.调用数组的splice方法，把图片信息对象，从pics数组中删除
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    // 上传图片成功事件
    handleSuccess(response) {
      console.log(response);
      const pic = { pic: response.data.tmp_path };
      this.addForm.pics.push(pic);
    },
    // 点击切换tab栏
    tabClicked() {
      if (this.activeIndex == "1") {
        this.getListData();
      }
      if (this.activeIndex == "2") {
        this.getOnlyData();
      }
    },
    // 点击添加商品按钮
    add() {
      this.$refs.ruleForm.validate(async (valid) => {
        console.log(valid);
        if (!valid) {
          return this.$message.info("请输入信息");
        }
        // 处理数据
        // 深拷贝this.addForm
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");
        this.manyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newInfo);
        });
        this.onlyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newInfo);
        });
        form.attrs = this.addForm.attrs;
        // console.log(form);
        // 发送添加商品请求
        const { data: res } = await this.$http.post("goods", form);
        if (res.meta.status !== 201) {
          return this.$message.error("添加商品失败！");
        }
        this.$message.success("添加商品成功！");
        this.$router.push("/goods");
        console.log(res);
      });
    },
  },

  created() {
    this.getCascDate();
  },
  computed: {
    ID() {
      if (this.addForm.goods_cat.length == 3) {
        return this.addForm.goods_cat[2];
      }
    },
  },
};
</script>

<style scoped lang='less'>
.el-alert {
  display: flex;
  justify-content: center;
}
.step {
  margin-top: 20px;
  margin-bottom: 20px;
}
.el-checkbox {
  margin: 0 10px 0 0;
}
img {
  width: 100%;
  height: 100%;
}
.el-button {
  margin-top: 20px;
}
</style>